<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="app">
      <h2>{{fullName}}</h2>
    </div>

    <script src="../js/vue.js"></script>

    <script>
      const app = new Vue({
        el: "#app",
        data: {
          firstName: "kobe",
          lastName: "Bryant",
        },
        computed: {
          // fullName: function () {
          //   return this.firstName + " " + this.lastName;
          // },
          // 计算属性一般是没有set方法，只读属性
          // 完整的属性如下
          fullName: {
            set: function (newValue) {
              console.log("------", newValue);
              const names = newValue.split(" ");
              this.firstName = names[0];
              this.lastName = names[1];
            },
            get: function () {
              return this.firstName + " " + this.lastName;
            },
          },
        },
      });
    </script>
  </body>
</html>
